Death Knocks Twice

Dean Reed

Bob Martin

Fabio Testi

Francesco di Villaverde

Ini Assmann

Ellen Kent

Leon Askin

Peppe Mangano

Werner Peters

Charly Hollmann

Riccardo Garrone

Armando Locatelli

Mario Brega

Riccardo

Hélène Chanel

Angela

Femi Benussi

Lois Simmons

Renato Baldini

Lionel Simmons

Teodoro Corrà

Rinaldo

Lanfranco Cobianchi

Tom Felleghy

Berry

Nadja Tiller

Maria di Villaverde

Anita Ekberg

Sophia Ferretti

Adolfo Celi

"der Professor"

Marlies Petersen

Babsie

Bruno Ariè

Charly's Henchman

Antonietta Fiorito

(credit only)